hg: build-infra/jdk8: Fix uncygdrive for msys. Now msys should really work! :-)

[magnus.ihse.bursie at oracle.com]

Changeset: 2ed6d7d743c8
Author:    ihse
Date:      2012-09-27 15:25 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/2ed6d7d743c8

Fix uncygdrive for msys. Now msys should really work! :-)

! common/autoconf/basics_windows.m4
! common/autoconf/boot-jdk.m4
! common/autoconf/configure.ac
! common/autoconf/generated-configure.sh
! common/src/uncygdrive.c